Default DHCP server settings DHCP server default settings Parameter Default Value DHCP server Disabled Lease database expiration time 86400 seconds The duration of the lease for an assigned IP address 43200 seconds (one day) Maximum lease database expiration time 86400 seconds DHCP server with option 82 Disabled DHCP server unknown circuit ID for option 82 Permit range lookup IP distribution mechanism Linear Parent topic: DHCP Servers